Steam boiler



Patented Aug. l, 1922.

2 SHEETS-SHEET l. 33

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HHM-w ,ad 6. 7 l 5 7 y... 4I.. 3mm.. l .d 5 4 d r D@ J. F 12? W j F. STERN. STEAM BolLER. APPLICATION F-lzLEDAPR. 26, 1920.

Patented Aug. l, 1922.

2 SHEETS-SHEET 2.

ite-tas WILLIAM r. s'rnnn, or nn'rnolr, MICHIGAN, 'assunifi'` For cnn-nails fr'oaonnr n.

LITTLE, or SOUTH ivi'rnwauirnnwrsconsrn; i

STEAE BOILER.

speciacationiaf retiersratent. "pmntQdAug 1, 1922.

Application led April 26, 1321),. ,Serial No. 376,761.l

To all whom t may concern: e

Beit known that I, VILLIAM F. STERN, a citizen ot the UnitedStates, residingat De troit, in the county of. Wayne and State ot Michigan, have invented certain new and useful Improvements in Steam Boilers, of which the following is a speciiication. t y

This invention relates to steam boilers, and the primary object of the invention is to provide anv improved boiler having a relatively large area of heating surface and in which a small quantity oi `water is requiredy to develop and maintain a steady pressure ot steam. i e e Another object or' the invention is to provide an improved vertical boiler in whichl the parts thereof are compactly arranged so that the same can be eit'ectively'used in spaces ot a limited area. p:

A further object of the invention is to provide a vertical boiler `having an improve means for preheating 'the water prior to the entrance thereof into the steam generating section thereof, so as to prevent the cracking of the boiler by the sudden lowering ofthe temperature thereof when water is introduced into the same. e Y

A further objectof the invention is to provide an improved means tor circulating ,the heated air around the portions of the boiler containing the water to be generated into steam, so that the water will be quickly turned into steam and thereby permit the use thereof a short time after the burner has been lit.

A still further object of the invention is to provide an improved steam boiler ot the above character which is durable and efficient in use, one that is simple and easy to manufacture, and one which can be placed upon the market at a reasonable cost. f

With these and other objects in view, the invention consists in the novel construction, arrangement and formation of parts as will be hereinafter more specifically described, claimed and illustrated in the accompanying drawings, forming a part or' this invention, in which drawings:

Figure 1 is a vertical longitudinal section through theimproved steam boilen 'Figure 2 is a horizontal section talren on the line QW?, of Figure 1.

Figure 3 is a bottom plan view of the same. Referring to `the drawings i in detail,

wherein similar reference characters desig nate coi-:responding throughout they several "views, the letter A generally indicates the improved boilerwhich includes the outercasing 5, Ithe water reservoir 6 and the steam generating portion 7.

av plurality yof concentricallyV larranged cylindrical members, 89and 10 each of which includes cylindricallwalls lliconnected by upper and lower heads While threec'oncentric-cylindrical members are shown, itis to be understood `that any `number of the same maybe provided jas is `desirable lor practicall according to the useto whichvthe boiler is to be put. They/,members 8,- 9and 10 are arranged inrspaced relation so asto permitthe products oi' combustion or. Vthe heated air to rise up, between the same and thereby readily heat the watertherein. f The section 10` isconnected withthe section v9 aty dianietrically opposed points at its upper end by pipes 13,` which servezas meansfor conducting the steam generated in the inner the steam inthe upper portion of the section 9 to the outer section-8. The lower yend of the Vcentral section 1()` is` connected,to` the section 9 by means, of pipes' 15 andy these pipes are arranged belowand intermediate thepipes 13 and, serve as means for conduct ing water from the intermediate section 9 to the inner section 10. i The-"intermediate section 9 is connected at its lower endto the outer section .8 by means otthepipes 16 whichsare arranged intermediate the pipes land intermediate and below the pipes `14 and these pipes serve as means for conducting water from theflower end4 of the :section 8 to the lower end of theintermediate section 9. The pipes 13, 1a, 15` and 16 not only serve as means 'for supplying water to Ithe` Y -eo The ,steam generating, portion i ,includesY sections and for conveying steam from the i sections, but also serve `as `means for connect# ing1 the sections together and for holding the same in their correct spaced relation and the arrangement ot' `these pipes is suchl that the strain is equally distributed to all portions of the sections. lhile thesections ,87 9 and 10- of the steam generatingportion 7 ofthe boiler' are shown circular in formation, kit, is to be understood that the same can be ot any conguration, that is, square, oval ror rectangular shaped in cross section. Y 4Theouter waterreservoir Gis of the sam-e configuration as the 'steam generating portion 7 of the boiler and completely surrounds theysafme and is arranged in concentric spaced relation.

thereto. The lower end of the lwater ,reservoire'itends fbelow thesteam generating portion 7 of the boiler andforms yin connection with the steam generating portion 7 ahous- ,ingA for the heat pro'dncing rneans, such as a gas btrrnerl. The ont-er water reservoir 6 *consists @of inner 4and outer spaced yside walls l18 'and 19""and upper vspaced wallsQO. The inner side :wall T8 has"its lower end curved'inwardly as at 21 in 'engagement' with the lower-"surface Eored'ge "of the ionfter 'sfide Wall 19=anfd=tli`isforms a *complete water housing betxv'een-` theA inner and outer sidel` walls vkof'and i9 and the upper spaced walls :20.` The Ycurvature ofthe lower end 210i the inner side avail 18 'also forms "means for' deiec'ting the' heat from the burner upward'ly between l'the *airl spaces between 'the lwitter resenvoirland thel steam generating portion`7.` ,"Ilhenpper spaced walls 20 of the water v`4reservoir16 are arranged abovel ithe npper-endsloff thesections 8,9 and l0 of the 1 steam generating portion 7 'off-fthe boiler `and forni the means `for directing the lheated air over the lupperl sur'iface of the sections. .The ripper vvaflls'20 are connected byga central nipple 2Q which form mean-s for` permitting i the escape 'otft-he gases from the upper end a5" y A n Y. wallQOfhas'connected thereto thedepending of shafts-ner. 'ne .lower piste ofthe lupper ppen, 'which r-terminan'Cates with the in` .terior ldfthe waterreservoir; and this pipe entends downwardly intoftheouter section '8 of thef steam generating yportion-7 and as the water-inthe*reservoir reaches the upper v por tionftlireof the'fsarne lgradually overflows K into the pipe `2B land into the 'enter section 8 `I`1which supplies "the water to the other sections. yrThe pipe23 isfco'nnecte'd as at24 to relation to "the 'water reservoir va'ndj'the heat and gases lowing 'through l the nipple `22 enter into the "space'between fthe waterreservoirfand lthe 'easingv f5 andflow down around the waterreservoir andi out of a Apipe 27. which" is "provided for that ALpiirp'ose'. Th:

waterreservoir 6b-'has1eommunieatngthen Withif'adjacjent ftoiitsilowerend a l"water 'sup Vply .pipe 28 which extends outwardlyI through `the casing 5y and it can be Vseen lthatas `the water enters the water reservoir v6, the same is heated b y the passage of the heated :air and gases between the outer section 8 of the steam generating portion 7 and the waterreservoir 6 and aroundzendbefy tween the water reservoir and the outer casing `5. rhs thewater 1s heated 1t gradually rises into the upper wall 2O of vthe Water reservoir and Hows into lthe `pipe 23 and downintothe outerfsecton 8 ofr'the steanl generating portion 7 `wherey it is distribnted by means of the pipes l5 and it-through the intermediate and inner sections 9 and 101.

The passage of-theffheated air and gases between the sections A8, 9 and l0-fof the steam generating portion 7 heats the 'water and turns the'same into steam which is `deliver'ed to `the outer section 8 by means of the pipes 18 and 14. A steam outlet pipe 30 issecnred to andjcoininunicates withl the outer section" 8;

as, at 31 4and this pipe -extendsthrough a nipple 32 carried by the plate 20 oi' ltht4 upper `wall of the vwater reservoir `and ou of lthe upper wall '26 of vthe casing op Th pipe 301s seen-red `to the upper `*wall 26e. the casing 5-as atandthis pipealso forni.;- means for retaining the steam generating` portion v47 in 'correct relationlito 4the Water reservoir. A water gauge 34 off the usual-or any,` preferred configuration is provided for the' boiler' so that fthe height off the water Iin the steam generating portion 7 can lbe `-readily determined Aat kall times and Ithe water gauge is connected-by ineanslol lUpper lower pipes 35 with the section Soi?thegen`l erating portion 7 and the height of the water can be readily seenin the 'glass column 36 *which may "be graduated it 'so desired.

A suitable""hand` operatedvalve 37 'is alsoV Vprovided forcutting off the water Yfrornthe gauge ywhen necessary.` A drain Acock 3S *is also provided for the gauge. The upperene'l of the gauge 34 'supports a. steam pressnire gauge 39 yand thus the :pressure-of fthe steam inthe steam generator-7 can be readily seen. The pipes '35 of `thega'uge 34h also tend' to hold thesteam generating portion in correct position. 'A "drain pipe l0 communicates with the lowerend'ot theonter Vsection "8 of the steam generatingportion 7 and extends outwardly of the'casingI 5 and is connected thereto as at 4l. y This drain `pipe A'serves means to drain all water and sediment ffionithesteam generating portionfwhen necessary or vdesirable. This pipe also :Forms ymeans for holding the steam incorrect position.

To facilitate the` cleaningvo'f; the 'boiler `the removable hand holds 42l and 43arefprovided forrthe outer-casing `5 and the `waterreservoir v y y From the foregoing description. it-lcan be seen that *an improved vertical boiler is generating portion 7 provided in which the water is effectively preheated before the entrance thereof into the steam generating portion and in which the steam generating portion and the water reservoir is so arranged that a mairiinunr area of heating surface for both of the same is provided.` c

` Changes in details may be made without departing from the spirit or scope of my invention; but, i

I claim:

l. ln a steam boiler, the combination of steam generator sections arranged in equidistantly spaced relation to each other, means for establishing communication between said sections, a water reservoir ar-` ranged in spaced relation to the steam generating sections and completely surrounding the same, a casing surrounding the water reservoir and arranged in spaced relation thereto, a burner arranged below the steam ier reservoir, means for supplying water to the water reservoir, a depending `pipe carried by the upper end ofthe water reservoir and extending into one of said sections, a

, gas and hot air outlet formedin the upper end of said water reservoir, and a gas and hot air outlet formed in the lower end of said casing.

2. In a steam generating boiler, the com bination of a plurality of equi-distantly spaced concentrically arranged steam gen erating sections, steam pipes connecting the inner section to the intermediate section at diametrically spaced points at the upper ends of said sections, steam pipes connecting the` intermediate sections to the outer sections at Vdiametrically spaced points and arranged intermediate the iirst mentioned steam pipes, water pipes connecting the lower ends of the inner section to the intermediate section at diametrically spaced points, water pipes connecting the lower ends of the intermediate section with the outervsection at diametrically spaced points and arranged intermediate the first mentioned water pipes, a water reservoir surrounding said steam generating sections and arranged in concentric relation thereto, means for supplying water to the lower end of said reservoir, a depending pipe carried by the upper end of said reservoir and cornmunicating with the outer steam generating section, a housing surrounding said water reservoir and arranged in spaced concentric generating portions and housed by said wa-` relation thereto, a burner arranged below said steam generatingk sections and enclosed by said water reservoir, a hot air and gas outlet formed in the central portion of the water reservoir at the upper end thereof, a hot air and gas outlet formed in the casing at; the lower end thereof, and a steam outlet formed in the upper end of the outer steam generating section. Y

3. ln a'steam generating boiler, the combination of a plurality of equidistantly spaced concentrically arranged steam generating sections, a water reservoir com-` pletely surrounding said sections and arranged in concentric spaced relation thereto, means connecting the steam generating sections together, a steam outlet pipe communicating `with the steam generating sections, a casing` `surrounding the water reservoir and arranged in concentric spaced relation thereto, means for supplying water to the water reservoir7 means from the water reservoir into the steam generating sections, a burner arranged below'said steam generating sections and enclosed by said water reservoir, the innerl for introducing water y wall of said water reservoir adjacent to the lower end thereof being inclined inwardly to direct heated air and gases tow-ards said steam generating sections,

tions, and means for draining the water from said steam generating sections when so desired.

4L. A steam generating boiler comprising a vertically disposed cylindrical steam generating section having a flue therethrough and intermediate and outer cylindrical steam generating sections surrounding the first mentioned steam generating'section and ar,- ranged in spaced concentric relation therethrough, water and steam conducting stay pipes connecting the upper .and lower ends of the steam generating sections together, a casing housing said sections, a water reservoir arranged in said casing for receiving said steam generating sections, and a water feed pipe communicating with the lower end of the reservoir, a water outlet pipe carried by the water reservoir extending into a the outermost of the steam generating sections, means for permitting the flow of heated air intothe casing, and means for permitting the exit of the heated air from the lower end of the casing. i

WILLIAM F. STERN.

a water and steam gauge for `said steam generating sec-y t 

